Lead-alkali-silica Glass vs. Borosilicate Glass
Both lead-alkali-silica glass and borosilicate glass are glass and glass-ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.
For each property being compared, the top bar is lead-alkali-silica glass and the bottom bar is borosilicate glass.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 3.1 | |
| 2.2 to 2.6 |
| Dielectric Constant (Relative Permittivity) At 1 Hz | 7.0 | |
| 4.8 to 5.5 |
| Elastic (Young's, Tensile) Modulus, GPa | 67 | |
| 67 to 80 |
| Electrical Dissipation At 1 Hz | 0.0024 | |
| 0.0026 to 0.018 |
| Electrical Dissipation At 1 MHz | 0.0018 | |
| 0.0017 to 0.0088 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 12 | |
| 9.0 to 12 |
| Flexural Strength, MPa | 34 | |
| 34 to 69 |
| Stiffness to Weight: Axial, points | 12 | |
| 15 to 17 |
| Stiffness to Weight: Bending, points | 43 | |
| 55 to 61 |
| Thermal Expansion, µm/m-K | 9.0 | |
| 3.3 to 5.1 |